The Elm is a 25 km long and 3 to 8 km wide and forested mountain range in south-eastern of Braunschweig in the countries Helmstedt and Wolfenbüttel in Lower Saxony (Germany). This forest area includes the largest beech forest of North Germany and the Reitlingstal, to be a part of the natural reserve Elm-Lappland. From the geological point of view the Elm consists of limestone to be rich of fossils.

The colloquium takes place in Burg Warberg, a moated castle founded in the first decades of the 13rd century. It is located in Warberg, a municipality at the eastern edge of the Elm.